Question

1 - Reduza os termos semelhantes.
a) 7x + 8x

b) 6x + 2x + 9x

c) 8x - 4x - 5x

d) 3ab + 2ab - 5ab

e) - 5xy + xy - 9xy + 3xy

f) *16x2y – 13x²y + 12 x?y - 5 xạy

g) 6x2y3 – 8 x2y3 + 2x2y3 – x2y3

h) 7-a-2a +7a - 14a + 2a + a​

Answer 1

Resposta:

$a)7x + 8x = 15x \\ b)6x + 2x + 9x = 17x \\ c)8x - 4x - 5x = 8x - 9x = - x \\ d)3ab + 2ab - 5ab = 5ab - 5ab = 0 \\ e) - 5xy + xy - 9xy + 3xy = - 14xy + 4xy = - 10xy \\ f)16x2y - 13x {}^{2} y + 12xy - 5xay = 28x3y - 5xay + 13x {}^{2} y \\ g)6x2y {}^{3} - 8x2y {}^{3} + 2x2y {}^{3} - 2xy {}^{3} = 8x4y {}^{3} - 10x3y {}^{3} = - 2xy {}^{3} \\ h)7 - a - 2a + 7a - 14a + 2a + a = 7 - 17a + 9a = 7 - 8a$